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21 st Century Oncology

Disclosed Mar 4, 201610 years ago2,213,597 affectedConfirmed

Official notice

What is known

People affected2,213,597 (as reported by the organization)
DisclosedMar 4, 2016
HappenedOct 3, 2015
AttackNot stated
Data exposedNot stated
SectorHealthcare · US
StatusConfirmed

Sources

Source
Indiana Attorney General 2016 data breach report: 21 st Century Oncologyin.gov · Official notice

Notices filed

WhereFiledPeople
Indiana AGresidents of INMar 4, 201613,329
History of this record
  • 2026-09-25 · added · backfill source

First seen 2026-09-25 (Indiana AG), confirmed by Indiana AG. Record counts are as reported. Not legal advice.

Everything about 21 st Century Oncology

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